Setting rules dinamically in a livewire component

protected $rules = [
    // (other rules)...
    'image' => 'nullable|image|max:4096', // now i have this line, but the 4096 must be dynamic
    // 'nullable|image|max:' . getDefaultFileMaxSize(), <-- won't work here, how to make it work?
];

protected $rules = [
    // (other rules)...
    'image' => 'nullable|image|max:4096', // now i have this line, but the 4096 must be dynamic
    // 'nullable|image|max:' . getDefaultFileMaxSize(), <-- won't work here, how to make it work?
];